Welded pipe is formed by rolling plate and welding the seam (usually by Electric resistance welding ("ERW"), or Electric Fusion Welding ("EFW")). The weld flash can be removed from both inner and outer surfaces using a scarfing blade.

X42 Line Pipes are manufactured as per specifications established by american petroleum institute (api). API 5l is a specification of api which defines the standard for the dimension, physical, mechanical and chemical properties of the steel. We are supplier & distributor of X42 Seamless Steel Pipe, X42 Welded ( ERW, LSAW, SSAW ) Steel Pipe made of Carbon steel and alloy steel according to API, ASTM, ASME, DIN standards strictly.

Seamless (SMLS) Pipe is formed by drawing a solid billet over a piercing rod to create the hollow shell.

Seamless Pipe provides the most reliable pressure retaining characteristics, and is often more easily available than welded pipe.

Welded, Electric Resistance Welded (ERW) and Electric Fusion Welded (EFW) Pipe is formed by rolling plate and welding the seam. The weld flash can be removed from the outside or inside surfaces using a scarfing blade. The weld zone can also be heat treated, so the seam is less visible.

Welded Pipe often has tighter dimensional tolerances than seamless, and can be cheaper if manufactured in the same quantities. Large diameter Pipe (about 10 inches or greater) may be ERW, EFW or Submerged Arc Welded (SAW) Pipe.

The joint coefficient (z used in EN standards) or joint quality factor (Ej, used in ASME standards) used for calculation of the wall thickness for welded tubes. The type of welding process, amount and type of NDT decide the factor.

Typical Application of API 5L EFW Pipe

API 5L EFW Pipe is used for construction of long distance pipelines for combustible liquids and gases, nuclear station pipelines, heating system pipelines, general-purpose pipelines, vessels manufacturing, mechanical engineering and instrumental engineering.

Refineries

Power Plants

Boilers

Ship Building

Heat Exchangers

Condensers

Paper & Pulp

Marine Applications

Nuclear Power

Fossil Fuel Power Plants

API 5L EFW Pipe Marking, Packaging & Shipping

Packing:API 5L EFW Pipe in Seamless & Welded both are loose or in bundles tightened with Iron Strips. Special packings: Metal or Wooden Cases, Pallets etc. Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.

Marking:

API 5L EFW Pipe are supplied with marking according to standard and customer request.

Marking is paint on the ends of pipes.

The same data, as well as additional information per customer’s request, is indicated on the bundle’s tags.

Tracing the leak of API 5L EFW Pipe

Tracer Tight is a patented leak-detection technology, certified by the US Environmental Protection Authority (EPA), which inoculates a tank or API 5L EFW Pipe with a small amount of tracer chemical, before probes are installed under and around the tank or pipeline, allowing a technician to collect and analyse soil vapour samples. If a leak occurs, the tracer passes into the soil where it is detected by gas chromatography. The technology can detect leaks as a small as 3.8 litres a day, regardless of the size of the installation involved.